ifb-325 portable user station talent electronics user manual · 2019. 9. 10. · pem2 nut, self...

IFB-325Portable User StationTalent ElectronicsUser Manual

9350-7488-000 Rev D 12/2005

PROPRIETARY NOTICEThe RTS product information and design disclosed herein were originated by and are the property of Telex Communications, Inc. Telex reserves all patent, propri-etary design, manufacturing, reproduction, use and sales rights thereto, and to any article disclosed therein, except to the extent rights are expressly granted to oth-ers.

COPYRIGHT NOTICECopyright 2005 by Telex Communications, Inc. All rights reserved. Reproduction in whole or in part without prior written permission from Telex is prohibited.

UNPACKING AND INSPECTIONImmediately upon receipt of the equipment, inspect the shipping container and the contents carefully for any discrepancies or damage. Should there be any, notify the freight company and the dealer at once.

CUSTOMER SUPPORTTechnical questions should be directed to:Customer Service DepartmentRTS/Telex Communication Inc.12000 Portland Avenue South.Burnsville, MN 55337 U.S.A.Telephone: (800) 392-3497Fax: (800) 323-0498Factory Service: (800) 553-5992

Return Shipping InstructionsCustomer Service DepartmentTelex Communications, Inc. (Lincoln, Nebraska)Telephone: (402) 467-5321Fax: (402) 467-3279Factory Service: (800) 553-5992

Please include a note in the box which supplies the company name, address, phone number, and a person to contact regarding the repair, the type and quantity of equipment, a description of the problem and the serial number(s).

Shipping to the ManufacturerAll shipments of products should be made via UPS Ground, prepaid (you may request from Factory Service a different shipment method). Any shipment upgrades will be paid by the customer. The equipment should be shipped in the original packing carton. If the original carton is not available, use any suitable container that is rigid and of adequate size. If a substitute container is used, the equipment should be wrapped in paper and surrounded with at least four inches of excelsior or similar shock-absorbing material. All shipments must be sent to the following address and must include the Proof of Purchase for warranty repair. Upon completion of any repair the equipment will be returned via United Parcel Service or specified shipper, collect.

Factory Service DepartmentTelex Communications, Inc.8601 East Cornhusker Hwy.Lincoln, NE 68507, U.S.AAttn: Service

Tableof

Contents

Chapter 1Introduction and Description ......................................................................................................................3Description and Specifications ....................................................................................................................3General ........................................................................................................................................................3Features .......................................................................................................................................................3Connections and Controls ...........................................................................................................................3Specifications ..............................................................................................................................................4

Chapter 2Operation ....................................................................................................................................................5External Connections and Controls ............................................................................................................5Internal Jumper ...........................................................................................................................................6

Chapter 3Replacement Parts .......................................................................................................................................7Where to Obtain Parts .................................................................................................................................7Mechanical Parts .........................................................................................................................................7

Chapter 4Diagrams .....................................................................................................................................................9

CHAPTER 1

Introduction and Description

Description and Specifications

General

the IFB-325 is a portable user station for use with RTS 2-wire intercom systems. The IFB-325 is a listen-only IFB belt pack that can be used to listen to only one intercom channel.

Features

Features of the IFB-325 include:

• Powered externally, via the intercom system power supply on channel one

• Power-ON indicator

• Headset/earset jack set for 150Ω operation

• Internal jumper selection of intercom channel one or channel two (default to channel two)

Connections and Controls

The IFB-325 has the following connections and controls:

• Intercom/program volume control

• Headset connector that accepts 1/4” monaural phone plug

• Channel connector that accepts an XLR type 3-pin connector for intercom line an power input

3

Introduction and Description

Specifications

General

Channel Supplied Power Requirements

32 VDC nominal (standard RTS line), 50 to 80 mA

Environmental Requirements

Storage: -20°C to 80°C; 0% to 95% humidity, non-condensing

Operating: 0°C to 50°C; 0% to 95% humidity, non-condensing

Dimensions

3.25” (82.6mm)H x 3.5” (88.mm)W x 1.8” (45.7mm) D

Weight

1.0 pounds (0.45kg)

Interface Requirements

Earset

150 to 600Ω headphones

RTS Intercom Channel

Input Level: 2 Vp-p (0 dBu) nominal

Input Impedance: 200Ω ±5%

Noise Contribution

less than -60 dB on the line

Headphone Amplifier

Voltage Gain

27 ±3dB from the line

Maximum Output

165mW into 150Ω

Frequency Response

250 Hz to 8 kHz +1/-4dB

Connector Pin Configurations

Headset Connector

Type: 1/4” Monaural Plug

Sleeve: Headset audio lowTip: Headset audio high

Intercom Channel Connectors

Type: XLR-3F

Pin 1 CommonPin 2 Intercom Channel 1 (audio and +32 VDC input)Pin 3 Intercom Channel 2 (audio)

4

CHAPTER 2

Operation

External Connections and Controls

NOTE: The numbers refer to the callouts in Figure 1.

1. Volume Control: Use this control to adjust the headset/earset listen level.

2. ON indicator: This LED glows green when the belt pack is connected to an intercom channel that is functioning.

3. Headset Connector: This connector accepts a wide-response headset/earset, such as the RTS Model 2233 or Model 2234, with a 1/4” monaural phone plug.

4. Hole Plug: This hole is for future use.

5. Intercom Channel Connectors: The IFB-325 intercom channel is connected via a 3-pin female connector. The IFB-325 is powered from the intercom system power supply and will turn ON with the intercom system.

FIGURE 1. IFB-325 Connections and Controls

1 2

5

HEADSET

3

IFB-325

4

5

Operation

Internal Jumper

The channel termination is set for operation on intercom channel two, which is compatible with other RTS equip-ment. If IFB operation is required on the intercom channel one, an internal jumper must be changed as described in Table 1.

To gain access to the jumper, disconnect all power and line connections. Remove two screws from the top of each side and two screws from the bottom of each side. The jumper location is shown in Figure 2.

FIGURE 2. Internal Jumper

JUMPER NUMBER JUMPER FUNCTION

DEFAULT SETTING

J3 IFB Channel Selectilon

Pin 4&5 shorted: Channel one IFB

Pin 2&3 shorted: Channel two IFB

Pins 2 & 3 shorted

(Channel 2)

TABLE 1. Internal Jumper

R12

J2

J3

J1C8

DS1

C10

C18

C12

C6

6

CHAPTER 3

Replacement Parts

Where to Obtain Parts

Parts may be obtained directly from Telex at:

Telex/RTS Systems12000 Portland Avenue SouthBurnsville, MN 55337Telephone: (800) 392-3497Fax: (800) 323-0498

Mechanical Parts

Final Assembly(Refer to Figure X for Item No. location

Item No. Description Part No.

1 Case, IFB-325 90607374-008

2 Top Plate 90707374-008

3 Not Used

4 Circuit Board Assembly 90307477-001

5 Knot, Nylon Body 9160563-601

6 Boot, Knob 9160563-602

7 Screw, 4-40 x 0.25, Flat Head 800124-001

8 Belt Clip 91107600-00

9 Screw, 4-40 x 0.25, Pan Head 51845-038

10 Hole Plug 4501-2617-00

11 Screw, 4-40 x 0.1875, Pan Head 51845-073

12 Washer, Lock, Split, #4 50086-001

13 Valox 1303-0010-00

14 Loctite Superbonder BF 753

15 Label, Serial 3101001700

16 Not Used

17 Not Used

18 Screw Locking Agent 59857-000

Connector Plate Assembly(Refer to figure X for Item No. locations)


1 Not Used

2 Jack, Phono,1/4” 2013001200

3 Connector, XLR-3F 40055-10

4 Connector, 4-pin 59958-004

5 Contact, Connector 59958-200

6 thru 9 Not Used

10 Connector Plate 90807374-007

11 Screw Locking Agent 59857-000

Final Assembly(Refer to Figure X for Item No. location


7

Replacement Parts

Circuit Board Assembly(Refer to Figure X)

Ref No. Description Part No.

Support Bracket 64106-003

C1, C2 Capacitor, CM, SM, 0.22μF, 50V 102880-237

C3 Capacitor, CM, SM, 0.33μF, 50V 102880-239


C5 Capacitor, EL, 2200μF, 16V 102884-412





C10 Capacitor, EL, SM, 1μF, 50V 102884-606

C11 Not Used

C12 Capacitor, EL, SM, 0.1μF, 50V 102884-600


C14 Not Used


C17 Capacitor, CM, SM,220 pF, 50V 102879-208

C18 Capacitor, EL, SM, 4.7μF, 25V 102884-410

C19 Not Used

C20, C21

Capacitor, CM, SM, 0.1μF, 50V 102881-351

C22 - C24

Not Used


D1 - D4 Diode, SM, Switching, 914/4148 58711-100

DS1 LED, Rectangular, Green 58685-101

J1, J2 Connector, St Locking, 0.059, M-4 59958-104

J3 Connector, St Header, 0.100, M-5 590089-005

PEM1 Nut, Self Clinching, 4-40 59832-002

PEM2 Nut, Self Clinching, 4-40 59832-002

Q1, Q2 Transistor, SM, SI NPN, MMBTA13

54749-000

R1, R2 Resistor, SM, 22.1kΩ, 1%, 1/8W 102404-333

R3-R6 Not Used

R7 Resistor, SM, 10kΩ, 1%, 1/8W 102404-300

R8 Resistor, SM 10kΩ, 5%, 1/8Ω 102513-103

R9 Resistor, SM, 10kΩ, 1%, 1/8W 102404-300

R10 Resistor, SM, 4.7kΩ, 5%, 1/8W 102513-472

R11 Not Used

R12 Potentiometer, 10kΩ, 10%, 0.05W 54131-005

R13 Resistor, SM, 10Ω, 5%, 1/8W 102513-100

R14, R15

Resistor, SM, 47kΩ, 5%1/8W 102513-473

R16 Resistor, SM, 10Ω, 5%, 1/8W 102513-100

R17 Resistor, SM, 150kΩ, 5%, 1/8W 102513-154

R18 Resistor, SM, 10Ω, 5%, 1/8W 102513-100

R19, R20

Not Used

R21 Resistor, SM, 7.5kΩ, 5%, 1/8W 102513-752

R22 Not Used

R23 Resistor, SM 0Ω, 5%, 1/8W 102513-000

R24, R25

Not Used

R26 - R29

Resistor, SM, 10Ω, 5%, 1/8W 102513-100

R30 - R33

Not Used

R34 Resistor, SM, 1kΩ, 5%, 1/8W 102513-102

R35 Resistor, SM 75kΩ, 1%, 1/8W 102404-384

TP1 Connector, Test Point Terminal 20170014-00

U1 IC, SM, Dual Op Amp, LM833 16030833-SM1

U2 IC SM, LP Audio Amp, MC34119 16030146-SM1

U3 Not Used

U4 IC, Voltage Regulator, 12V, 78L12 54680-412

Circuit Board Assembly(Refer to Figure X)

Ref No. Description Part No.

8

CHAPTER 4

Diagrams

Drawing Number Title

9010-7488-000 Figure X Final Assembly, IFB-325

9020-7477-001 Figure X Connector Plate Assembly, IFB-325

9030-7477-001 Figure X PC Board Assembly, IFB-325

9027-7477-001 Figure X Schematic, IFB-325

9

Diagrams

FIGURE 3. Final Assembly, IFB-3259010-7488-000, Rev F

1.

3.

4.

1

2

3

4

7

8

9

(2

PLS

)

(4

PLS

)

IFB

325

90007488-0

00

RTS

TE

LE

XB

Y

10

2.

3.

12

(2

PLS

)

14

61.

5

11

(2

pls

)

15

17

16

4.

18

J1

J2

TO

J1

TO

J2

10

FIGURE 4. Connector Plate Assembly, IFB-3259020-7477-001, Rev E

11

Diagrams

FIGURE 5. PC Board Assembly, IFB-3259030-7477-001 Rev M

12

ifb-325 portable user station talent electronics user manual · 2019. 9. 10. · pem2 nut, self...

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